Checked
About
The :checked pseudo-class matches checkboxes, radio buttons and select options that are currently checked / selected.
Checkbox
Checkboxes match if they are checked.
- Check the checkbox to match the selector
Radio Buttons
A radio button matches if it's selected.
- Select a radio button to match the selector
Select
A select option matches if it's selected. This works for single and multiselect elements, but options of a single select element cannot be styled.
- Select an option to match the selector